- The NLC will be closed for the following holidays:
| Holiday | 2017-2018 | 2018-2019 | 2019-2020 |
| TEACHER WORK DAY | Friday, August 18 | TBA (Last Friday before Loudoun County Public Schools start) | TBA (Last Friday before Loudoun County Public Schools start) |
| Labor Day | Monday, September 4 | Monday, September 3 | Monday, September 2 |
| Columbus Day | Monday, October 9 | Monday, October 8 | Monday, October 14 |
| Thanksgiving Day | Thursday, November 23 | Thursday, November 22 | Thursday, November 28 |
| Day After Thanksgiving | Friday, November 24 | Friday, November 23 | Friday, November 29 |
| Christmas Eve (Observed), NLC closes @ 2pm | Friday, December 22 | Monday, December 24 | Tuesday, December 24 |
| Christmas Day | Monday, December 25 | Tuesday, December 25 | Tuesday, December 25 |
| New Year’s Day | Monday, January 1 | Tuesday, January 1 | Wednesday, January 1 |
| Martin Luther King, Jr Day | Monday, January 15 | Monday, January 21 | Monday, January 20 |
| President’s Day | Monday, February 19 | Monday, February 18 | Monday, February 17 |
| Good Friday | Friday, March 30 | Friday, April 19 | Friday, April 10 |
| Memorial Day | Monday, May 28 | Monday, May 27 | Monday, May 25 |
| July 4th (Observed) | Wednesday, July 4 | Thursday, July 4 | Friday, July 3 |
*** Once the Loudoun County School calendar is published for these school years the dates for these Teacher Work Days will be announced. They will be held the Friday prior to the first day of school.